Shure SR105 service manual JI J2

Page 24

S 4

OFF

JI - J2

e T S 2

-

	GROMMET	x
	a FILTER &-	J	3
		e	3
WHT		d	m
WHT		+
	CIRCUIT	t
	BOARD TU	1
		1

YEL / BLK

H&	RED
a J	MAIN
	CIRCUIT
	BOARD

R 4 1

VOLUME

FIGURE 17. 70-VOLT CONVERSION: INTERNAL WIRING

Image 24

Contents SR105 Power Amplifier Specifications Iii Page Table of Contents Page SR105 Power Amplifier DescriptionSR105 Power Amplifier Front Panel Operating Instructions General Operating InstructionsPower Requirements Mounting and VentilationThermal Overload Input ConnectionsSR105 Power Amplifier Block Diagram Output Connections Direct Output only Recommended Wire Gauge VS. AMPLIFIER-TO-SPEAKER Distance AMPLIFIER-TO-SPEAKER Distance MetersVolt Output Output Voltage MeterSpecial Operating Instructions Basic Operating HintsAdding SR105A Amplifiers in a 70-VOLT System Cascaded Bridging Connections Adding Headphone Jack to Speaker ConnectionsCoil Service Instructions Printed Circuit Board Removal Small Signal and Predriver Transistors Driver TransistorsOutput Transistors DiodesDiode Bridge Rectifier Checking Transistors and DiodesGRN RED YEL BLK WHTCOM Service Illustrations GNDJI J2 Page RKC37 TB1TB2 XF1RKC53 IRC CEC-TORKC9 Main Circuit Board Parts Location Diagram Troubleshooting GeneralAC Voltage Measurements DC Voltage MeasurementsPage SR105 Power Amplifier Circuit Diagram Page Architects Andengineers Specifications Condensed Operating InstructionsConstant Voltage 70-VOLT Speaker Output